Basic simple animations where the enemies just move forward.

assets/devices.json

@@ -34,8 +34,8 @@
       {"_type": "Sprite", "name": "rope_vines_up"}
     ]
   },
-  "TRIPEWIRE_TRAP": {
-    "id": "TRIPEWIRE_TRAP",
+  "TRIPWIRE_TRAP": {
+    "id": "TRIPWIRE_TRAP",
     "name": "Tripwire Trap",
     "description": "Watch where you're going.",
     "inventory_count": 0,

assets/enemies.json

@@ -10,7 +10,7 @@
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "LightSource", "strength": 60, "radius": 1.8},
       {"_type": "EnemyConfig", "hearing_distance": 5},
-      {"_type": "Sprite", "name": "peasant_girl"}
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10}
     ]
   },
   "KNIGHT": {
@@ -22,6 +22,7 @@
       {"_type": "Combat", "hp": 20, "max_hp": 20, "damage": 1, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "EnemyConfig", "hearing_distance": 5},
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10},
       {"_type": "Sprite", "name": "armored_knight"}
     ]
   },
@@ -31,11 +32,12 @@
         "foreground": [156, 172, 197],
         "background": [30, 20, 75]
       },
-      {"_type": "LightSource", "strength": 80, "radius": 2.8},
+      {"_type": "LightSource", "strength": 60, "radius": 1.8},
       {"_type": "Combat", "hp": 40, "max_hp": 40, "damage": 10, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": true},
       {"_type": "EnemyConfig", "hearing_distance": 5},
-      {"_type": "Sprite", "name": "axe_ranger"}
+      {"_type": "Sprite", "name": "axe_ranger"},
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10}
     ]
   },
   "EVIL_EYE": {
@@ -47,7 +49,8 @@
       {"_type": "Combat", "hp": 50, "max_hp": 50, "damage": 50, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "EnemyConfig", "hearing_distance": 5},
-      {"_type": "Sprite", "name": "evil_eye"}
+      {"_type": "Sprite", "name": "evil_eye"},
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10}
     ]
   },
   "RAT_GIANT": {
@@ -59,6 +62,7 @@
       {"_type": "Combat", "hp": 20, "max_hp": 20, "damage": 20, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "EnemyConfig", "hearing_distance": 10},
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10},
       {"_type": "Sprite", "name": "rat_with_sword"}
     ]
   },
@@ -71,6 +75,7 @@
       {"_type": "Combat", "hp": 20, "max_hp": 20, "damage": 20, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "EnemyConfig", "hearing_distance": 10},
+      {"_type": "Animation", "scale": 0.2, "simple": true, "frames": 10},
       {"_type": "Sprite", "name": "hairy_spider"}
     ]
   }

components.cpp

@@ -12,6 +12,7 @@ namespace components {
   ENROLL_COMPONENT(LightSource, strength, radius);
   ENROLL_COMPONENT(Device, config, events);
   ENROLL_COMPONENT(Sprite, name);
+  ENROLL_COMPONENT(Animation, scale, simple, frames);
 
   void configure_entity(const ComponentMap& component_map, DinkyECS::World& world, DinkyECS::Entity ent, json& data) {
     for (auto &i : data) {
@@ -33,5 +34,6 @@ namespace components {
     components::enroll<LightSource>(component_map);
     components::enroll<Device>(component_map);
     components::enroll<Sprite>(component_map);
+    components::enroll<Animation>(component_map);
   }
 }

components.hpp

@@ -4,6 +4,8 @@
 #include "config.hpp"
 #include "dinky_components.hpp"
 #include "point.hpp"
+#include <SFML/System/Vector2.hpp>
+#include <SFML/Graphics/Rect.hpp>
 
 namespace components {
   struct Player {
@@ -83,6 +85,23 @@ namespace components {
     string name;
   };
 
+  struct Animation {
+    float scale = 0.0f;
+    bool simple = true;
+    int frames = 10;
+    int current = 0;
+
+    void step(sf::Vector2f& scale_out, sf::IntRect& rect_out) {
+      if(current < frames) {
+        scale_out.x += scale;
+        scale_out.y += scale;
+        current++;
+      }
+
+      (void) rect_out;
+    }
+  };
+
   void configure(ComponentMap& component_map);
 
   // these need to be here if you're using components::convert outside of components.cpp

constants.hpp

@@ -11,7 +11,7 @@ constexpr const int SCREEN_WIDTH=1280;
 constexpr const int SCREEN_HEIGHT=720;
 constexpr const int RAY_VIEW_X=(SCREEN_WIDTH - RAY_VIEW_WIDTH);
 constexpr const int RAY_VIEW_Y=0;
-constexpr const bool VSYNC=false;
+constexpr const bool VSYNC=true;
 constexpr const int FRAME_LIMIT=60;
 constexpr const int NUM_SPRITES=1;
 constexpr const int MAX_LOG_MESSAGES=17;

dinkyecs.hpp

@@ -8,6 +8,7 @@
 #include <typeindex>
 #include <typeinfo>
 #include <unordered_map>
+#include <optional>
 
 namespace DinkyECS
 {
@@ -16,14 +17,12 @@ namespace DinkyECS
   using EntityMap = std::unordered_map<Entity, size_t>;
 
   template <typename T>
-    struct ComponentStorage
-    {
+    struct ComponentStorage {
       std::vector<T> data;
       std::queue<size_t> free_indices;
     };
 
-  struct Event
-  {
+  struct Event {
     int event = 0;
     Entity entity = 0;
     std::any data;
@@ -31,8 +30,7 @@ namespace DinkyECS
 
   typedef std::queue<Event> EventQueue;
 
-  struct World
-  {
+  struct World {
     unsigned long entity_count = 0;
     std::unordered_map<std::type_index, EntityMap> $components;
     std::unordered_map<std::type_index, std::any> $facts;
@@ -42,44 +40,35 @@ namespace DinkyECS
 
     Entity entity() { return ++entity_count; }
 
-    void clone_into(DinkyECS::World &to_world)
-    {
+    void clone_into(DinkyECS::World &to_world) {
       to_world.$constants = $constants;
       to_world.$facts = $facts;
       to_world.entity_count = entity_count;
       to_world.$component_storages = $component_storages;
 
-      for (auto eid : $constants)
-      {
-        for (const auto &[tid, eid_map] : $components)
-        {
+      for(auto eid : $constants) {
+        for(const auto &[tid, eid_map] : $components) {
           auto &their_map = to_world.$components[tid];
-          if (eid_map.contains(eid))
-          {
+          if(eid_map.contains(eid)) {
             their_map.insert_or_assign(eid, eid_map.at(eid));
           }
         }
       }
     }
 
-    void make_constant(DinkyECS::Entity entity)
-    {
+    void make_constant(DinkyECS::Entity entity) {
       $constants.push_back(entity);
     }
 
     template <typename Comp>
-      size_t make_component()
-      {
+      size_t make_component() {
         auto &storage = component_storage_for<Comp>();
         size_t index;
 
-        if (!storage.free_indices.empty())
-        {
+        if(!storage.free_indices.empty()) {
           index = storage.free_indices.front();
           storage.free_indices.pop();
-        }
-        else
-        {
+        } else {
           storage.data.emplace_back();
           index = storage.data.size() - 1;
         }
@@ -88,8 +77,7 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      ComponentStorage<Comp> &component_storage_for()
-      {
+      ComponentStorage<Comp> &component_storage_for() {
         auto type_index = std::type_index(typeid(Comp));
         $component_storages.try_emplace(type_index, ComponentStorage<Comp>{});
         return std::any_cast<ComponentStorage<Comp> &>(
@@ -97,24 +85,20 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      EntityMap &entity_map_for()
-      {
+      EntityMap &entity_map_for() {
         return $components[std::type_index(typeid(Comp))];
       }
 
     template <typename Comp>
-      EventQueue &queue_map_for()
-      {
+      EventQueue &queue_map_for() {
         return $events[std::type_index(typeid(Comp))];
       }
 
     template <typename Comp>
-      void remove(Entity ent)
-      {
+      void remove(Entity ent) {
         EntityMap &map = entity_map_for<Comp>();
 
-        if (map.contains(ent))
-        {
+        if(map.contains(ent)) {
           size_t index = map.at(ent);
           component_storage_for<Comp>().free_indices.push(index);
         }
@@ -123,14 +107,12 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      void set_the(Comp val)
-      {
+      void set_the(Comp val) {
         $facts.insert_or_assign(std::type_index(typeid(Comp)), val);
       }
 
     template <typename Comp>
-      Comp &get_the()
-      {
+      Comp &get_the() {
         auto comp_id = std::type_index(typeid(Comp));
         dbc::check($facts.contains(comp_id),
             fmt::format("!!!! ATTEMPT to access world fact that hasn't "
@@ -143,19 +125,16 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      bool has_the()
-      {
+      bool has_the() {
         auto comp_id = std::type_index(typeid(Comp));
         return $facts.contains(comp_id);
       }
 
     template <typename Comp>
-      void set(Entity ent, Comp val)
-      {
+      void set(Entity ent, Comp val) {
         EntityMap &map = entity_map_for<Comp>();
 
-        if (has<Comp>(ent))
-        {
+        if(has<Comp>(ent)) {
           get<Comp>(ent) = val;
           return;
         }
@@ -165,8 +144,7 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      Comp &get(Entity ent)
-      {
+      Comp &get(Entity ent) {
         EntityMap &map = entity_map_for<Comp>();
         auto &storage = component_storage_for<Comp>();
         auto index = map.at(ent);
@@ -174,48 +152,40 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      bool has(Entity ent)
-      {
+      bool has(Entity ent) {
         EntityMap &map = entity_map_for<Comp>();
         return map.contains(ent);
       }
 
     template <typename Comp>
-      void query(std::function<void(Entity, Comp &)> cb)
-      {
+      void query(std::function<void(Entity, Comp &)> cb) {
         EntityMap &map = entity_map_for<Comp>();
 
-        for (auto &[entity, index] : map)
-        {
+        for(auto &[entity, index] : map) {
           cb(entity, get<Comp>(entity));
         }
       }
 
     template <typename CompA, typename CompB>
-      void query(std::function<void(Entity, CompA &, CompB &)> cb)
-      {
+      void query(std::function<void(Entity, CompA &, CompB &)> cb) {
         EntityMap &map_a = entity_map_for<CompA>();
         EntityMap &map_b = entity_map_for<CompB>();
 
-        for (auto &[entity, index_a] : map_a)
-        {
-          if (map_b.contains(entity))
-          {
+        for(auto &[entity, index_a] : map_a) {
+          if(map_b.contains(entity)) {
             cb(entity, get<CompA>(entity), get<CompB>(entity));
           }
         }
       }
 
     template <typename Comp>
-      void send(Comp event, Entity entity, std::any data)
-      {
+      void send(Comp event, Entity entity, std::any data) {
         EventQueue &queue = queue_map_for<Comp>();
         queue.push({event, entity, data});
       }
 
     template <typename Comp>
-      Event recv()
-      {
+      Event recv() {
         EventQueue &queue = queue_map_for<Comp>();
         Event evt = queue.front();
         queue.pop();
@@ -223,10 +193,18 @@ namespace DinkyECS
       }
 
     template <typename Comp>
-      bool has_event()
-      {
+      bool has_event() {
         EventQueue &queue = queue_map_for<Comp>();
         return !queue.empty();
       }
+
+    template <typename Comp>
+      std::optional<Comp> get_if(DinkyECS::Entity entity) {
+        if(has<Comp>(entity)) {
+          return std::make_optional<Comp>(get<Comp>(entity));
+        } else {
+          return std::nullopt;
+        }
+      }
   };
 } // namespace DinkyECS

guecs.hpp

@@ -165,11 +165,7 @@ namespace guecs {
 
       template <typename Comp>
         std::optional<Comp> get_if(DinkyECS::Entity entity) {
-          if($world.has<Comp>(entity)) {
-            return std::make_optional<Comp>($world.get<Comp>(entity));
-          } else {
-            return std::nullopt;
-          }
+          return $world.get_if<Comp>(entity);
         }
 
       template <typename Comp>

raycaster.cpp

@@ -80,6 +80,7 @@ void Raycaster::sprite_casting(sf::RenderTarget &target) {
   // after sorting the sprites, do the projection
   for(auto& rec : sprite_order) {
     if(!$sprites.contains(rec.second)) continue;
+
     // BUG: eventually this needs to go away too
     auto& sf_sprite = $sprites.at(rec.second).sprite;
     auto sprite_pos = $level.world->get<components::Position>(rec.second);
@@ -145,12 +146,17 @@ void Raycaster::sprite_casting(sf::RenderTarget &target) {
       int d = y * texture_height - $height * half_height + sprite_height * half_height;
       int tex_y = ((d * texture_height) / sprite_height) / texture_height;
 
-      sf_sprite->setScale({sprite_scale_w, sprite_scale_h});
-      sf_sprite->setTextureRect(sf::IntRect({
-            {tex_x, tex_y},
-            {tex_render_width, texture_height}}));
-      sf_sprite->setPosition({x, y});
+      sf::Vector2f scale{sprite_scale_w, sprite_scale_h};
+      sf::IntRect in_texture{ {tex_x, tex_y}, {tex_render_width, texture_height}};
 
+      if($level.world->has<components::Animation>(rec.second)) {
+        auto& animation = $level.world->get<components::Animation>(rec.second);
+        animation.step(scale, in_texture);
+      }
+
+      sf_sprite->setScale(scale);
+      sf_sprite->setTextureRect(in_texture);
+      sf_sprite->setPosition({x, y});
       $brightness.setUniform("offsetFactor", sf::Glsl::Vec2{0.0f, 0.0f});
 
       // the SpatialMap.distance_sorted only calculates the

systems.cpp

@@ -131,6 +131,7 @@ void System::death(GameLevel &level, components::ComponentMap& components) {
     world.remove<Motion>(ent);
     world.remove<Combat>(ent);
     world.remove<EnemyConfig>(ent);
+    world.remove<Animation>(ent);
 
     auto entity_data = config.items["GRAVE_STONE"];
     components::configure_entity(components, world, ent, entity_data["components"]);
@@ -161,6 +162,11 @@ void System::combat(GameLevel &level) {
           enemy_combat.attack(player_combat)
         };
 
+        if(world.has<Animation>(entity)) {
+          auto& animation = world.get<Animation>(entity);
+          animation.current = 0;
+        }
+
         world.send<Events::GUI>(Events::GUI::COMBAT, entity, result);
       }
     }